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this post was submitted on 08 May 2024
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linux4noobs
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I have the kernel in the bootloader, problem is I need to enroll it with MOK manager to actually boot it in secure boot. But it starts in /boot/efi with no option to go back to /boot so I don't really understand how exactly I'm supposed to do it.
I've honestly never wrestled with Secure Boot in this way; I usually disable it if it won't let me boot my preferred kernel. From my brief online searches, enrolling your own keys is possible, but that depends on the kernel modules being signed in the first place, and carries risk of bricking devices if not done correctly. So you might just want to disable Secure Boot, or otherwise stick to kernels provided by your distribution.
https://www.dannyvanheumen.nl/post/secure-boot-linux-shim-mokmanager/ seems to be a good introduction to the concept. Your distribution should have specific documentation on how to make custom kernels and secure boot work if you need more details.
If you have already made a certificate and imported it with mokutil maybe you just need to select the MokManager.efi from your screenshot and start that to enroll the key.